Table 9 Spearman's correlation coefficients among measured parameters.

	IgG	IgA	IgM	C3	C4
PA per cell	0.267	0.217	0.211	0.127	0.112
ROS production per cell	–0.222	0.167	0.200	0.100	0.023
AUC of SOA	0.198	–0.045	0.212	0.267	0.121

AUC, area under the curve; PA, phagocytic activity; ROS, reactive oxygen species; SOA serum opsonic activity.